YOU SAID:

I am really smart, by the way and I don‘t care about what people say.

INTO JAPANESE

ちなみに私は本当に頭が良く、人の言うことは気にしません。

BACK INTO ENGLISH

By the way, I'm really smart and don't care what people say.

INTO JAPANESE

ちなみに、私は本当に頭が良くて、人の言うことは気にしません。

BACK INTO ENGLISH

By the way, I'm really smart and don't care what people say.